package session;

import entity.Cake;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

@WebServlet(name="CartServlet",urlPatterns = "/CartServlet")
public class CartServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        resp.setContentType("text/html;charset=utf-8");
        PrintWriter out = resp.getWriter();
        List<Cake> cart = null;
        boolean purFlag = true;
        HttpSession session = req.getSession(false);
        if(session == null){
            purFlag = false;
        }else {
            cart = (List) session.getAttribute("cart");
            if (cart == null) {
                purFlag = false;
            }
        }
        if(!purFlag){
            out.write("对不起！您还没有购买任何商品! <br>");
        }else{
            out.write("您购买的蛋糕有：<br>");
            double price = 0;
            for(Cake cake : cart){
                out.write(cake.getName()+"<br>");
            }
        }
    }
}
